quantum-espresso/PP/examples/exx_interpolated_bands_example/pbe_fourier/pbe.scf.in

 &control
    calculation = 'scf'
 /
 &system
    ibrav=2, celldm(1) =10.20, 
    nat=2, ntyp=1,
    ecutwfc=40.0,
    input_dft='pbe',
    nbnd = 8, 
 /
 &electrons
 /
ATOMIC_SPECIES
 Si  28.086  Si.pz-vbc.UPF
ATOMIC_POSITIONS (alat)
 Si 0.00 0.00 0.00
 Si 0.25 0.25 0.25
K_POINTS (automatic)
 8 8 8 1 1 1